Merge branch 'stable-3.1' into stable-3.2
* stable-3.1:
Disk cache metrics require cache.enableDiskStatMetrics
Set version to 2.14.22
ElasticContainer: Upgrade V6_8 to elasticsearch 6.8.13
Upgrade testcontainers to 1.15.0
Workaround Gitiles bug on All-Users visibility
Validate Gerrit changes on stable-2.15 with Jenkins
Set version to 2.15.22-SNAPSHOT
Set version to 3.0.16-SNAPSHOT
Set version to 2.15.21
Set version to 3.0.15
Set version to 2.16.26-SNAPSHOT
Set version to 2.16.25
Set version to 3.1.11-SNAPSHOT
Set version to 3.1.10
Workaround Gitiles bug on All-Users visibility
Workaround Gitiles bug on All-Users visibility
Workaround Gitiles bug on All-Users visibility
Workaround Gitiles bug on All-Users visibility
Set version to 2.15.21-SNAPSHOT
Set version to 2.15.20
Fetch JGit documentation from the archive site
Remove generation for c.g.gwtexpui.* JavaDoc
Set version to 3.1.10-SNAPSHOT
Set version to 3.1.9
Set version to 3.0.15-SNAPSHOT
Set version to 2.16.25-SNAPSHOT
Set version to 3.0.14
Set version to 2.16.24
Make PermissionBackend#ForRef authoritative
Validate Gerrit changes on stable-2.15 with Jenkins
Fix tests for stable-2.15 branch
Make PermissionBackend#ForRef authoritative
Make PermissionBackend#ForRef authoritative
Make PermissionBackend#ForRef authoritative
Change-Id: I64104dcb06b21ccef50397675fec9805443e4c60
